The buttons for the WYSWYG editors no longer load. If I switch the wordpress editor to HTML, sometimes one set of buttons will load, but I'm using multiple WYSWYG editors on my post-edit page and so this isn't very useful either.

As well, any data I type into the WYSWYG editor is immediately lost when the post is saved.

We're using ACF as a core component of a site that's supposed to launch January 1st, so if there's any way we could get a fix before then I'd be incredibly grateful.

Not working for me.. but it may be complicated by the fact that I'm using a custom post type with multiple WYSIWYG editors on the page. I'll keep an eye on that thread... hopefully someone else can resolve it while he's on vacation.

Maybe others know this already, but double check one thing that helped me - WordPress remembers the last selection of the 'Visual' and 'HTML' tabs on the main editor. The admin page with custom fields WYSIWYG editor only displays the WYSIWYG controls if the 'Visual' tab is selected on the default editor. Try and select 'Visual' tab and reload the page

OK, Ambienthack's solution seemed to work for about a minute but now it's back to the same problem for me. I am seeing duplicated WYSIWG editors on every post page (I did not add a second one, so this is some kind of phantom editor).

Still broken for me. This is ridiculous. I've got a project that's been basically dead in the water for five months because I can't put more than one WYSIWYG editor on a page. Shouldn't this be a priority to the developers?

This issue has resurfaced for me in ACF 3.5.0, and updating to 3.5.1 didn't fix it. Any ACF WYSIWYG field in the WordPress page editor shows up as raw HTML with no WYSIWYG buttons above the field. While creating a site, everything was loading just fine, and suddenly this issue surfaced. The ACF configuration shows the fields should be WYSIWYG fields. Any assistance would be most appreciated!